Mixing-machine.



G. KUEBLEB..

` MIXING MACHINE. APPLICATION FILED SEPT-.177,190B.

Patented Dec. 8, '1908.

3 SHEETS- SHEET `21.

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G.- KUEBLEB..

MIXNG MACHINE.'

APPLIOATION FILED SHPT`17, 1908,.

Patented Dec.8,1908.

3 SHEETS-SHEET 3.

4IIIvrrsn STATES 'PATENT ortica.

GUsirAv KUEBLER, or SAGINAW, MIcnIeAN.

MIXING-MACHINE.

To all whom it may concern:

Be it known that I, GUs'rAv KUEBLER, a citizen of Germany, residing inSaginaw, in the county of Saginaw and State of Michigan, United Statesof America, have invented certain new and useful Improvements inMixing-Machines, of which the following is a specification.

My invention relates particularly to machines for kneading and mixingdough and similar material, and particularly to that kind of machines ofthis class in which the material to bemixed orfkneaded is placed in atrough so mounted that it may be raised and lowered or tilted for thepurpose of dumping the material after it has been worked by the machine.

The object of my invention is to provide novel means whereby the troughis raised and lowered by power controlled by a lever which is soconnected with the driving mechanism that it may cause said mechanism toraise the trough at a relatively low speed and lower it at a higherspeed, the mechanism being provided with devices whereby it isautomatically stopped when the trough has been raised or lowered to thedesired extent.

In the accompanying drawings, Figure l shows a s ide elevation of amixing machine embodying my improvements. Fig. 2 shows a front elevationthereof. Fig. 3 is a detail view in side elevation with parts brokenaway of part of the driving mechanism. Fig. t is a detail view insection showing a spring catch for holding parts of the drivingmechanism in an inoperative position. Fig. 5 shows more clearly theessential parts of the mechanism.

The trough A is of usual construction being provided with brackets ahaving bearings supported on the main driving shaft B carrying fast andloose pulleys C, C. Said driving shaft is supported in a suitableframezl) and it is geared as usual by the cogs E with the mixing orkneading devices.

The fast pulley C is provided on its inner side with an annular recess cconcentric with its axis, and this recess has a concentric outer groovec and a concentric inner groove c2. A friction wheel F is arranged inthe recess c and is adapted to engage in either of the grooves c, c2,being rigidly attached to a short shaft G mounted to revolve in a boss gformed on the lever H and also connected by an arm g with a sleeve g2through which Specication of Letters Patent.

Application led September 17, 1908.

Patented Dec. 8, 1908.

Serial No. 453,433.

extends a shaft l that forms the pivot for the lever H and carries apinion i gearing with a pinion z" on the shaft Gr. The pinion z' mesheswith a spur wheel J on a shaft K extending transversely part way acrossthe machine. At its inner end the shaft is supported by a bracket L onthe main frame and it carries a beveled wheel L gearing with a similarwheel LZ fast with a screw shaft M with which coperates a nut Npivotally connected at n with arms N depending from the under side ofthe trough near its front end. The front end of the shaft M is supportedby arms O which are in turn supported by the shaft K. The lever H isconnected with the trough A by a slotted tively short slot p throughwhich extends a pin p fixed to the lever H. At its opposite end the linkis formed with a relatively long to the side of the trough.

Normally the rear end of the trough rests on an adjustable screw or stopQ and a pin R limits the outward movement of the nut N on the screwshaft.

lVhen the parts are in the position shown by full lines in Fig. l, andthe shaft B is revolved in the direction of the arrow, the kneading andmixing mechanism is in operation and the raising and lowering mechanismis out of gear, z'. e., the friction wheel F, while being in the recessc, is not engaged in either of the grooves c or c2, the lever at thistime being held by the spring catch S which engages a recess 's in theframe and holds the friction wheel F out of gear until the lever H ispositively operated. If now it is desired to dump the trough, the leverH is raised or pushed rearwards. This will cause the friction wheel F toengage the inner groove c2 and as the pulley C constantly revolves,motion will be transmitted through the gearing, before described, ltothe screw shaft M which will cause the trough to be raised to theposition shown by dotted lines in Fig. 1, and its contents will bedumped. Vhen the lever H is moved upwardly or rearwardly in the mannerbefore described, the pin p will pass to the rear end of the slot p. Asthe trough A rises, the pin p3 will first pass along the slot p2 withoutgiving any material endwise movement to the link P, but the slot Is ofsuch length that i ust before the trough has been raised to the limit ofits upward movement, the pin p3 link P. At its front end the link has arela- Y i slot p2 through which extends a pin p3 fixed Y will strike therear end of the Wheel p2 and will cause the link P to move endwise, thusmoving the lever H rearwards and disengaging the friction wheel F fromthe groove c2. The lever is then caught by the catch S and the frictionwheel F is held in inoperative position. The lifting operation is thusautomatically stopped. l

When it is desired to lower the trough after it has been dumped, thelever H .is pulled forwards or downwards. This causes the pin p to passto the rear end of the slot p while the friction wheel F engages thegroove c of the driving wheel or pulley. The screw shaft will then beturned in such direction as to lower the trough and, it will be observedthat, the lowering operation is much faster than the raising operation.During this operation the pin p3 passes from the rear end of the slot p2of the link P to tl e front end thereof and finally moves the link Prearwards and in an obvious manner causes the lever H to move rearwardsand the wheel F to be disengaged from the groove c. In this way thelowering mechanism is automatically stopped, while the` driving shaftcontinues to rotate. It will thus be seen that the trough is raised andlowered by mechanism which is automatically stopped when the limit ofthe upward or downward movement has been reached,

that the trough moves more rapidly when descending than when ascendingand that the gearing is such that should the mechann ism meet with anyobstruction, it would not be liable to breakage on account of the fric-1 tion gearing employed in the driving mechanism.

l claim as my invention 1. In a mixing machine, the combination of apivotally mounted trough and mechanism for raising it at a relativelylow speed and for lowering it at a greater speed.

2. In a mixing machine, the combination of a pivotally mounted trough,mechanism for raising it at a relatively slow speed and for lowering itat an increased speed, and means for automatically stopping the raisingand lowering mechanism when the trough has reached the limit of itsmovement in either direction.

3. In a mixing machine, the combination of a pivotally mounted trough, adriving shaft, a driving pulley thereon having an annular recessconcentric with the axis of the shaft and Yprovided with inner and outerconcentric grooves, a screw shaft operatively connected with the troughto raise and lower it, a friction wheel adapted to engage with either ofsaid grooves of the driving pulley, gearing connecting said frictionwheel with the screw shaft, and a lever for moving said friction wheelinto engagement with either of the grooves of the friction pulley.

4. In a mixing machine, the combination of a pivotally mounted trough, ascrew shaft operatively connected therewith to raise and lower it as thescrew shaft revolves, a friction pulley having an annular recessconcentric with its axis which is provided with inner and Voutergrooves, a friction wheel adapted to engage either of said grooves,gearing connecting said friction wheel with the screw shaft, a leverconnected with the friction wheel and a slotted link connecting thetrough with the lever. l

In testimony whereof, I have hereunto subscribed my name.

GUSTAV KUEBLER. Titnesses Max W. OTTO, GUsTAv A. HnssLoEHL.

